CN206845140U - The closed long packing element packer of washing well - Google Patents
The closed long packing element packer of washing well Download PDFInfo
- Publication number
- CN206845140U CN206845140U CN201720652446.1U CN201720652446U CN206845140U CN 206845140 U CN206845140 U CN 206845140U CN 201720652446 U CN201720652446 U CN 201720652446U CN 206845140 U CN206845140 U CN 206845140U
- Authority
- CN
- China
- Prior art keywords
- packing element
- packer
- central tube
- well
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000012856 packing Methods 0.000 title claims abstract description 67
- 238000005406 washing Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000004073 vulcanization Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000011010 flushing procedure Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- Details Of Valves (AREA)
Abstract
The utility model belongs to oil field well field of tool, a kind of more particularly to closed long packing element packer of washing well, the utility model provides a kind of closed long packing element packer of washing well, including top connection, lower contact, central tube and packing element component, the upper end of described packing element component is fixedly connected with the immovable outer wall of packer；In the compresses lower section of packer, sliding sleeve, spring and adjusting set are provided with, described spring housing is provided with annular protrusion, annular protrusion is between sliding sleeve and spring on central tube and in the space that sliding sleeve, adjusting set and central tube three surround on central tube.The utility model employs the hydraulic pressure solution sealing mechanism that a deblocking piston is core, and compared with prior art, above-mentioned solution sealing mechanism is relatively reliable.In addition, using above-mentioned solution sealing mechanism, packer can be made to repeat to unseal and set on well, so as to complete well-flushing in the case where not playing well, effectively simplify operation process, reduce operating cost.
Description
Technical field
The utility model belongs to oil field well technical field of tools, more particularly to a kind of closed long packing element type packing of washing well
Device.
Background technology
Packer is a kind of downhole tool commonly used in the production of oil field, wherein, long packing element packer is a kind of weight therein
Want type.This packer makes packing element bulge by injecting water under high pressure between central tube and packing element, so as to realize packer
Set.However, existing long packing element packer is unsealed by way of cutting and unsealing pin mostly, this deblocking structure failure rate
It is higher, easily produce the problem of deblocking power is excessive, and usual manner is difficult to deblocking.Meanwhile above-mentioned packer does not possess well-flushing work(
Can, full well casing post can only be risen during well-flushing, operation process is cumbersome.
Utility model content
The utility model is by changing the arrangement of valve system, there is provided a kind of closed long packing element packer of washing well, with solution
The problem of being proposed in certainly above-mentioned background technology.
The technical problem that the utility model solves is realized using following technical scheme：The utility model provides one kind
The closed long packing element packer of washing well, including top connection, lower contact, central tube and packing element component, top connection and lower contact difference
Be threadedly attached in the upper and lower ends of central tube, packing element assembly set is mounted in the middle part of central tube, packing element component by packing element and
Vulcanization is connected to two steel bushings composition at packing element both ends, in the top section of packer, between central tube and packer outer wall
It is provided with check valve, the end set of check valve valve rod has a deblocking piston, with unsealing the upper end pair of piston in the side wall of packer
Inlet opening should be provided with, lead is provided with the lower surface of described top connection, one end of lead is inlayed by being interference fitted
In top connection, the other end coordinates with the pilot hole grafting on deblocking piston, and the outside at the both ends of described packing element is circular cone
Face structure, packing element sheath is provided with the outside of part pyramid like configuration, is provided with the inside of packing element sheath and the circular conical surface on packing element
The circular conical surface matched somebody with somebody, the axial section where axial section covering steel bushing where packing element sheath.
At least two, described check valve, axisymmetrical of each check valve along packer are set.On described packing element with
Steel wire ring is provided with corresponding to steel bushing in section.
The beneficial effects of the utility model are：
1st, the utility model employs the hydraulic pressure solution sealing mechanism that a deblocking piston is core, when setting, is noted into central tube
Enter water under high pressure, now check valve is turned on, and water under high pressure is got enter between central tube and packing element, and realization is set；During deblocking, to oil jacket
Annular space injects water under high pressure, and deblocking piston is descending under the driving of hydraulic pressure, then promotes the valve rod of check valve, unidirectional so as to open
Valve, realize deblocking.Compared with prior art, above-mentioned solution sealing mechanism is relatively reliable.In addition, using above-mentioned solution sealing mechanism,
Packer can be made to repeat to unseal and set on well, so as to complete well-flushing in the case where not playing well, effectively simplify operation process,
Reduce operating cost.
2nd, the utility model packing element end set cone structure, compared with the cylindrical surface structure of the prior art,
Packing element sheath can be more closely bonded with packing element, so as to effectively improve the adhesive strength of packing element and steel bushing.
3rd, the utility model is provided with steel wire ring in packing element, and steel wire ring is contained in the rubber matrix of packing element and is enclosed on steel
The inside of set, depart from after packing element stress can be prevented with steel bushing, so as to improve packer entirety voltage endurance capability.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial enlarged drawing at check valve.
In figure, 1- top connections, 2- deblocking pistons, 3- valve rods, 4- packing element sheaths, 5- packing elements, 6- central tubes, 7- steel bushings, 8-
Lower contact, 9- guide rods, 10- steel wire rings.
Embodiment
The utility model is described further below in conjunction with accompanying drawing：
The present embodiment includes top connection 1, lower contact 8, central tube 6 and packing element component, and top connection 1 and lower contact 8 are led to respectively
Cross the upper and lower ends for being threaded in central tube 6, packing element assembly set is mounted in the middle part of central tube 6, packing element component by packing element 5 and
Two steel bushings 7 that vulcanization is connected to the both ends of packing element 5 form, in the top section of packer.Above to be of the prior art common
Structure, it will not be repeated here.
Check valve is provided between central tube 6 and packer outer wall, the end set of check valve valve rod 3 has deblocking piston
2, inlet opening is correspondingly arranged on unsealing the upper end of piston 2 in the side wall of packer.The utility model is employed to unseal piston 2
For the hydraulic pressure solution sealing mechanism of core, when setting, water under high pressure is injected into central tube 6, now check valve is turned on, and water under high pressure is entered
Enter between central tube 6 and packing element 5, realization is set；During deblocking, water under high pressure, drive of the deblocking piston 2 in hydraulic pressure are injected to oil jacket annular space
It is descending under dynamic, the valve rod 3 of check valve is then promoted, so as to open check valve, realizes deblocking.Compared with prior art, it is above-mentioned
It is relatively reliable to solve sealing mechanism.In addition, using above-mentioned solution sealing mechanism, packer can be made to repeat to unseal and set on well, from
And well-flushing is completed in the case where not playing well, effectively simplify operation process, reduce operating cost.
Lead 9 is provided with the lower surface of described top connection 1, one end of lead 9 is embedded in by interference fit
In top connection 1, the other end coordinates with the pilot hole grafting on deblocking piston 2.
The outside at the both ends of described packing element 5 is part pyramid like configuration, and packing element sheath 4 is provided with the outside of part pyramid like configuration,
The inner side of packing element sheath 4 is provided with the circular conical surface matched with the circular conical surface on packing element 5, and the axial section where packing element sheath 4 is covered
Axial section where lid steel bushing 7.The utility model packing element 5 end set cone structure, with circle of the prior art
Cylindrical structure is compared, and packing element sheath 4 can be more closely bonded with packing element 5, so as to effectively improve the attachment of packing element 5 and steel bushing 7
Intensity, prevent the two disengaging.
At least two, described check valve, axisymmetrical of each check valve along packer are set so that well-flushing piston 2 exists
Being accepted when pushing valve rod 3 evenly, can avoid the seal eccentric wear in the outside of well-flushing piston 2, so as to improve the use longevity of seal
Life.
Steel wire ring 10 is provided with 7 corresponding section of steel bushing on described packing element 5, steel wire ring 10 is contained in the rubber of packing element 5
In matrix body and the inside of steel bushing 7 is enclosed on, is departed from after the stress of packing element 5 can be prevented with steel bushing 7, so as to further improve packer
Overall voltage endurance capability.
Claims (3)
1. a kind of closed long packing element packer of washing well, including top connection (1), lower contact (8), central tube (6) and packing element component,
Top connection (1) and lower contact (8) are threadedly attached in the upper and lower ends of central tube (6) respectively, and packing element assembly set is mounted in center
The middle part of (6) is managed, two steel bushings (7) that packing element component is connected to packing element (5) both ends by packing element (5) and vulcanization form, and it is special
Sign is：In the top section of packer, check valve, check valve valve rod are provided between central tube (6) and packer outer wall
(3) end set has a deblocking piston (2), and the upper end in the side wall of packer with deblocking piston (2) is correspondingly arranged on inlet opening,
Lead (9) is provided with the lower surface of described top connection (1), one end of lead (9) is embedded in by interference fit
On joint (1), the other end coordinates with the pilot hole grafting on deblocking piston (2), and the outside at the both ends of described packing element (5) is circle
Cone structure, be provided with packing element sheath (4) on the outside of part pyramid like configuration, be provided with the inside of packing element sheath (4) with packing element (5)
Circular conical surface matching circular conical surface, the axial section where axial section covering steel bushing (7) where packing element sheath (4).
A kind of 2. closed long packing element packer of washing well according to claim 1, it is characterised in that：Described check valve is extremely
Rare two, axisymmetrical of each check valve along packer is set.
A kind of 3. closed long packing element packer of washing well according to claim 1, it is characterised in that：Described packing element (5)
Steel wire ring (10) is provided with upper section corresponding with steel bushing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720652446.1U CN206845140U (en) | 2017-06-05 | 2017-06-05 | The closed long packing element packer of washing well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720652446.1U CN206845140U (en) | 2017-06-05 | 2017-06-05 | The closed long packing element packer of washing well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206845140U true CN206845140U (en) | 2018-01-05 |
Family
ID=60797544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720652446.1U Active CN206845140U (en) | 2017-06-05 | 2017-06-05 | The closed long packing element packer of washing well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206845140U (en) |
-
2017
- 2017-06-05 CN CN201720652446.1U patent/CN206845140U/en active Active
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